[Event "FIDE World Cup Europe Hybrid Qual"]
[Site "Tornelo INT"]
[Date "2021.05.29"]
[Round "3.2"]
[White "Nguyen, Thai Dai Van"]
[Black "Grandelius, Nils"]
[Result "1-0"]
[ECO "D30"]
[WhiteElo "2577"]
[BlackElo "2670"]
[Annotator "Krasenkow,M"]
[PlyCount "99"]
[EventDate "2021.05.24"]
[EventType "k.o."]
[EventRounds "3"]
[EventCountry "NET"]
[SourceTitle "CBM 202 Extra"]
[Source "ChessBase"]
[SourceDate "2021.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.06.30"]
[SourceQuality "1"]

{[%evp 0,99,18,24,28,-6,-6,-6,15,9,28,6,24,19,29,-20,11,17,23,31,9,10,26,38,28,
21,29,27,13,-3,20,5,5,18,18,18,13,12,8,11,1,1,1,11,12,4,21,4,-12,-10,-3,18,24,
23,83,82,121,130,179,197,189,190,218,211,230,231,237,245,246,246,234,234,231,
230,230,231,223,215,215,215,215,215,215,216,216,216,216,216,216,328,327,327,
335,351,357,419,489,582,1016,1016,1022,1250]} 1. d4 d5 2. c4 e6 3. Nf3 a6 {
A popular system recently.} 4. Bg5 {Not a very ambitious move, just helping
Black's development.} Be7 5. Bxe7 Nxe7 6. Nbd2 {Heading to a Catalan setup.} (
6. e3 {is completely harmless, e.g.} O-O 7. Nc3 Nd7 8. b4 (8. Rc1 dxc4 9. Bxc4
c5 10. dxc5 Nxc5 11. b4 Qxd1+ 12. Rxd1 Nd7 13. O-O b5 14. Bb3 Nf6 $11 {1/2 (58)
Nakamura,H (2746)-Carlsen,M (2835) St Petersburg 2018}) 8... c6 9. Rb1 Qc7 10.
Rc1 Qb8 11. Bd3 {1-0 (48) Melkumyan,H (2663)-Dale,A (2351) Canberra 2021} {
and now} b5 {was enough for equality.}) 6... O-O (6... dxc4 7. Nxc4 Nd7 8. e3
O-O 9. Be2 (9. b4 $5 $14) 9... b6 10. O-O Bb7 11. Rc1 Ng6 12. Qc2 Qe7 13. Rfd1
Rac8 14. Qd2 Rfd8 15. Qe1 c5 $11 {1-0 (58) Swiercz,D (2656)-Godena,M (2493)
Gjakova 2016}) (6... Nd7 $5 7. g3 dxc4 8. Nxc4 b5 (8... b6 9. Bg2 Bb7 10. Qc2
h6 11. O-O Nf6 12. Rfd1 $14 {1-0 (43) Fressinet,L (2702)-Rakhmanov,A (2637)
Bastia 2015}) 9. Ncd2 Bb7 10. Qc2 Rc8 11. Nb3 c5 12. dxc5 Nxc5 13. Nxc5 Qa5+
14. Qd2 Qxd2+ 15. Kxd2 Rxc5 $11 {1/2 (37) Sakaev,K (2596)-Artemiev,V (2716)
Sochi 2020}) 7. g3 (7. Rc1 Nd7 (7... b6 $5) 8. Qc2 dxc4 9. Qxc4 c6 10. e4 {
1-0 (46) Kozul,Z (2608)-Moroni,L (2344) Trieste 2014} b6 $11) (7. e3 Nd7 8. Bd3
c5 (8... b6 $142 $11) 9. cxd5 Nxd5 10. dxc5 Nb4 11. Nb3 Qf6 12. a3 Nxd3+ 13.
Qxd3 Qxb2 14. O-O $14 {1/2 (41) Bindrich,F (2605)-Hess,M (2378) Magdeburg 2020}
) 7... Nd7 (7... b6 {is now dubious:} 8. Bg2 (8. cxd5 exd5 (8... Nxd5 9. Bg2
Bb7 10. Rc1 $14) 9. Bg2 Nd7 $1 10. O-O (10. Rc1 Nf6 (10... c5 $6 11. dxc5 bxc5
12. O-O Bb7 13. Qa4 Rc8 14. Rfd1 Nf6 15. Nb3 Qb6 16. Qa3 $14 {1-0 (34)
Fedoseev,V (2678)-Grandelius,N (2662) Chess.com INT 2020})) 10... Nf6 11. Rc1
Bf5 12. b4 (12. Ne5 Qd6 13. e3 c5 14. Nb1 c4 15. Nc3 b5 $132 {0-1 (25) Barp,A 
(2366)-Grandelius,N (2663) Chess.com INT 2020}) 12... Qd6 13. Qb3 {1-0 (37)
Giri,A (2764)-Grandelius,N (2663) Chess.com INT 2020} c6 $11 {[%cal Ya6a5]})
8... Bb7 9. cxd5 $1 (9. O-O Nd7 10. Rc1 c5 11. cxd5 Nxd5 12. Qb3 cxd4 13. Nxd4
Nc5 $11 {0-1 (43) Jumabayev,R (2654)-Kobalia,M (2614) Lichess.org INT 2020})
9... exd5 (9... Nxd5 10. O-O Nd7 11. e4 Ne7 12. Qe2 c5 13. Rfd1 $14) 10. Rc1
Nd7 11. O-O Rc8 12. Qb3 Re8 13. e3 a5 14. Rfd1 Ba6 15. Qa3 Bb7 16. Bh3 $14 {
1-0 (41) Sebenik,M (2481)-Niemann,H (2526) Bassano del Grappa 2021}) (7... c6
8. Bg2 b5 9. cxb5 (9. c5 $5) 9... cxb5 10. O-O Bb7 11. Rc1 Nd7 12. Nb3 Rc8 13.
Qd3 Nc6 14. a3 Na5 15. Rxc8 Bxc8 16. Nxa5 Qxa5 17. Rc1 $14 {1-0 (27)
Bernadskiy,V (2791)-Cruz Lledo,P (2576) Chess.com INT 2020}) (7... dxc4 8. Nxc4
b5 9. Ncd2 (9. Nce5 $5 Bb7 10. Bg2 Nd7 {0-1 (86) Kozionov,K (2470)-Svane,R 
(2613) Chess.com INT 2020} 11. Nxd7 Qxd7 12. Qc2 $14) 9... Bb7 10. Bg2 Nd7 11.
Rc1 Rc8 (11... e5 12. dxe5 Nxe5 13. O-O Nxf3+ 14. Nxf3 Rc8 15. Bh3 f5 {1-0 (50)
Jumabayev,R (2654)-Lugovskoy,M (2420) Lichess.org INT 2020} 16. Rc5 $16) 12.
Nb3 c5 13. dxc5 Bd5 14. O-O Bxb3 15. Qxb3 Nxc5 16. Qe3 Nd5 17. Qd4 Qf6 18. Qxf6
gxf6 19. Nd4 $14 {1-0 (32) Goganov,A (2565)-Usmanov,V (2436) St Petersburg 2020
}) 8. Bg2 c5 (8... dxc4 9. Nxc4 c5 {1-0 (55) Vantika,A (2286)-Schneider,J 
(2272) Chess.com INT 2020} 10. dxc5 Nxc5 11. O-O $14) 9. Rc1 cxd4 10. cxd5 Nxd5
11. Nxd4 N7f6 {Black has covered the long diagonal and is now ready to
continue development.} 12. O-O (12. Nc4 Qe7 $5 {[%cal Yf8d8]}) 12... e5 $1 13.
N4b3 Qe7 14. Ne4 Rd8 (14... Rb8 $142 $11 {[%cal Yb7b6]}) 15. Nxf6+ Nxf6 16. Qc2
Bg4 $6 (16... e4 $5) 17. Qc5 $1 {An interesting attempt to fight for
initiative - White obtains a queenside pawn advantage.} Qxc5 18. Nxc5 Bxe2 19.
Bxb7 (19. Rfe1 $5 Rd2 20. Bxb7 Re8 21. Rb1 g6 22. a4 $1 $16 (22. Nxa6 Bd3 23.
Rbd1 Rxb2 $11) (22. Bxa6 Bxa6 23. Nxa6 Ra8 24. Nb4 Ng4 $132)) 19... Bxf1 20.
Bxa8 Be2 (20... Bh3 $5 $14) 21. Bb7 a5 22. a4 $5 g6 23. b4 axb4 24. a5 Rd2 25.
Ra1 Rc2 $2 {Black must give up a piece but he had a better way:} (25... Nd7 $1
26. a6 Bxa6 27. Nxa6 b3 28. Rb1 b2 {with a probable draw.}) 26. a6 Bxa6 27.
Rxa6 $1 {[%mdl 4096]} Ng4 (27... Rxc5 28. Rxf6 Rb5 29. Be4 b3 30. Kg2 $1 {
- this is not a guaranteed win but Black's defence is quite difficult. But the
text move leads to an inferior version of a similar endgame.}) 28. Nd3 b3 29.
Rb6 Rc3 30. h3 $1 Rxd3 31. hxg4 Kg7 32. Be4 Rd4 33. f3 {White wins the b3 pawn,
then attacks the f7 pawn. Black has no defence as the exchange of rooks is
hopeless for him.} Rd1+ 34. Kf2 Rd2+ 35. Ke3 Rg2 36. Rxb3 h5 (36... Rxg3 37.
Rb7 $18 {[%cal Ye4d5]}) 37. gxh5 f5 38. Rb6 $5 Rxg3 (38... fxe4 39. Rxg6+ Kh7
40. Kxe4 $18) 39. Rxg6+ Rxg6 40. hxg6 Kxg6 41. Bb1 Kg5 42. Bc2 {With the help
of consequent zugzwangs, White pushes away Black's king.} Kg6 43. Kf2 Kf6 44.
Kg3 Kg5 45. Bb1 Kf6 46. Kh4 Kg6 47. Bc2 Kf6 48. Kh5 e4 49. f4 e3 50. Bd1 1-0

